*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 1.25rem);
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text-1);
  font-family: var(--font-ui);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img {
  display: block;
  max-width: 100%;
}

button,
input,
select {
  font: inherit;
}

button,
a,
select {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  color: inherit;
}

[hidden] {
  display: none !important;
}

.container {
  width: min(calc(100% - 2rem), var(--container));
  margin-inline: auto;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 200;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--text-1);
  color: var(--bg);
  transform: translateY(-180%);
  transition: transform var(--transition-fast);
}

.skip-link:focus {
  transform: translateY(0);
}

:where(a, button, input, select):focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 3px;
}

::selection {
  background: var(--brand-400);
  color: var(--on-brand);
}

.eyebrow,
.overline {
  margin: 0;
  color: var(--brand-400);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.eyebrow::before {
  content: "";
  width: 0.42rem;
  height: 0.42rem;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--brand-400);
  box-shadow: 0 0 0 0.22rem color-mix(in srgb, var(--brand-400) 12%, transparent);
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  letter-spacing: -0.045em;
}

h1,
h2,
h3,
p {
  overflow-wrap: break-word;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}


/* Phase 3C — accessibility */
:where(input, select)[aria-invalid="true"] {
  border-color: var(--danger);
}

.combobox-shell:has(input[aria-invalid="true"]) {
  border-color: var(--danger);
}

#result-title:focus {
  outline: none;
}

@media (forced-colors: active) {
  :where(a, button, input, select):focus-visible {
    outline: 3px solid Highlight;
  }

  .primary-button,
  .certification-badge,
  .quiet-badge,
  .level-meter i,
  .ratedcue-mark {
    forced-color-adjust: auto;
  }
}


/* Phase 3D — rendering performance */
@supports (content-visibility: auto) {
  .recent-section,
  .site-footer {
    content-visibility: auto;
    contain-intrinsic-size: auto 520px;
  }
}